Knowlegde Base

Does 1kVA Equals 1kW

It has been a point of confusion for some people that want to work on power system, especially those that works on solar and inverter system, some so called Solar Installers have confused their clients and exposed them to unnecessary expenses due to wrong calculation on power. They easily get confused when they want to convert watts to VA.

The simply method to know the power rating of any appliance is by look at the label on the such device or appliance, this will give more details about rating of the appliance.

Almost all electrical devices are rated in power (kW or W), and some will just have the Voltage V, and Current I, with this rating, it’s make it possible to know the wattage P of such appliance by multiply give Volts V and Ampere I

P = V x I

For instance, A 32″ LED TV has ratings as Voltage, 220V and Current, 0.6A

P = 220 x 0.6

P = 132W

Now, let’s try to bring up some definitions like apparent or ideal power, reactive power, actual power and power factor

Apparent Power is simply means the total power in use in a system, it’s Volt Ampere (VA), kilo Volt Ampare (kVA) or Mega Volt Ampere (MVA) as its measuring unit.

Reactive Power, this is simply means the power loss during the conversion from actual to apparent power. It is the power that’s not being used, which is wasted. It’s measuring unit of kVAR

Real or Actual Power, this means as it sounds, it is the actual output power in an electrical device after all the loss that occurs. It’s usually has rated in Watts (W), kilo Watts (kW) or Mega Watts (MVA)

kVA, kVAR and kW

Power Factor is a factor using in measuring of electrical system efficiency. It is use when converting kW to kVA and vice versa. Electrical efficiency has range in between 0 to 1, if the power factor is very near to 1 shows how efficiently is the total output of the electrical system. Mostly 0.8 has been power factor for many inverter systems

Also, there is no need for conversion of kW to kVA in DC circuit and as well as AC circuit that has 100% efficiency, it’s mostly not possible to have it AC circuit

Conversion of kW to kVA; Real power, kW / Power Factor, p.f = Apparent power, kVA

A 32″ LED Television has 132W and a ceilling fan has 65W. Total wattage is (132+65) = 197W

197W/0.8 = 246.25VA

Conversion of kVA to kW; Apparent power, kVA x Power Factor, p.f = Actual power, kW

What is the actual power output of 3.5kVA inverter system.

3500VA x 0.8 = 2800W i.e 2.8kW

The same steps applies in all electrical devices, hence, it’s easier to know what you are powering in the house, except for some appliances that required a starting current or surge which we will discuss in our future post.

Leave a reply if this is helpful or you have a question

Please follow and like us:

252 thoughts on “Does 1kVA Equals 1kW

  1. Prednisone is able to help during any severe disease. Its spectrum of action is broad that it covers almost all known diseases of autoimmune, allergic, and tumour origin. It is used all over the world and due to its strong action this medicine has already saved many lives.
    Buy prednisone online Now and Get Discount for all Purchased! – No Prescription Required.
    Safe & Secure Payments. Fast & Free Delivery.
    Two Free Pills (Viagra or Cialis or Levitra) available With Every Order.

  2. At this time, it seems like WordPress is the preferred blogging platform available
    right now. (from what I’ve read) Is that what you’re using
    on your blog? Great post, however, I was wondering if you could write a little more on this subject?

  3. Hey I know this is off topic but I was wondering if you knew of any widgets I could add to my blog that automatically tweet my newest twitter updates.
    I’ve been looking for a plug-in like this for quite some time and was hoping maybe you would have some experience with something like this.
    Please let me know if you run into anything.
    I truly enjoy reading your blog and I look forward
    to your new updates.

  4. Please let me know if you’re looking for an author for your site.
    You have some great posts, and I think I would be a good asset.
    If you ever want to take some of the load off, I’d like to write some material for
    your blog in exchange for a link back to mine. Please shoot me an email if interested.

  5. Комплексний інтернет-маркетинг
    Наше маркетингове агентство надає повний перелібуква послуг з просування букваізнесу в течение інтернеті. Фахіцентрі нашої компанії постійно вдосконалюють свої знання і намагаються оперативно застосовувати їх на практиці. Саме тому цифровий маркетинг в течениеід нашого агентства дозволяє домогтися бажаних результатів течение на небывало короткі термаіни.

  6. It is usually cheaper to buy a whole record than to accumulate yahoo bing-by-yahoo movie.
    This process also let you listen to a couple of extra songs to sample.

    You might just know which you have a whole new
    favorite yahoo movie now that you’ve never ever heard.

  7. Oh my goodness! Incredible article dude! Thank you, However I am going through troubles with your RSS.
    I don’t know the reason why I can’t join it. Is there anyone else having the same RSS issues?
    Anyone that knows the solution will you kindly respond?

  8. «Термопроцесс инжиниринг» это:

    отлаженное производство и высококачественные комплектующие, позволяющие компании выпускать продукцию высокого качества.
    сушильная камера оборудование для клееной древесины: прессы для бруса, прессы для щита;
    деревообрабатывающее оборудование: линии оптимизации поперечного раскроя, торцовочные станки

  9. You have made some really good points there. I looked on the internet for more information about the issue
    and found most people will go along with your views on this web site.

  10. At this time, it seems like WordPress is the preferred
    blogging platform available right now. (from what I’ve read) Is that what you’re using on your blog?
    Great post, however, I was wondering if you could write a little more on this subject?

  11. Стоимость ремонта гаражных ворот зависит от того, насколько серьёзна поломка или повреждение. Бывает, что после удара о ворота достаточно подрихтовать конструктивные элементы, но нередко требуется и полная замена полотна.
    ворота в парк Иногда бывает достаточно заменить батарейку у пульта д/у, а порой приходится менять фотоэлементы, редуктор, а то и чинить тонкую автоматику. В любом случае, проблема будет решена профессионально.

  12. безопасность
    Материалы для отделки пола производятся из сертифицированного гипоаллергенного сырья, они не влияют на здоровье людей и домашних животных

  13. Hi fellow readers. My team members and I are super excited we saw the like minds here. I’ve been scanning for this info for years and I will be encouraging my sisters to swing by. The other afternoon I was thumbing through the internet trying to scope out an answer to my staggering questions. Now I am inspired to take a leap in whatever method I can. We are getting all nerded out on the signs we are observing. Moreover, I just wanted to thank you from the bottom of my heart for such incredible information. This has boosted me out of my comfort zone. Many novel improvements are shaping around my world. Its really a perfect page to make new great effect. I must make mention that I am into. If you have time, visit my new photography site:quiet waters park weddings

Leave a Reply

Your email address will not be published. Required fields are marked *